CN114101905A - Laser welding equipment with adjustable light source - Google Patents
Laser welding equipment with adjustable light source Download PDFInfo
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- CN114101905A CN114101905A CN202111455939.3A CN202111455939A CN114101905A CN 114101905 A CN114101905 A CN 114101905A CN 202111455939 A CN202111455939 A CN 202111455939A CN 114101905 A CN114101905 A CN 114101905A
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- light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/073—Shaping the laser spot
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides laser welding equipment with an adjustable light source, which comprises a light source device, a machine base, a three-axis motion platform, a laser head and a tin wire supply device, wherein a control device is electrically connected with the three-axis motion platform and the tin wire supply device; the laser head and the tin wire supply device are arranged on the three-axis motion platform; the output end of the light source device is connected with the input end of the laser head through an optical fiber cable; the laser head comprises a shell, the upper end of the shell is provided with an optical fiber connecting port, the lower end of the shell is provided with a light outlet, and dustproof glass is arranged at the light outlet; a cavity is formed in the shell, and a first convex lens, a light spot shape adjusting device, a beam expanding lens, a second convex lens and a third convex lens are sequentially arranged in the cavity from top to bottom at intervals; the second convex lens and the third convex lens are the same in size. The invention can adjust the shape and size of the light spot.
Description
Technical Field
The invention relates to a laser welding machine, in particular to laser welding equipment with an adjustable light source.
Background
As is well known, various welding techniques exist on the market, among which laser welding is one of the important aspects of the application of laser material processing techniques, and its working principle is that laser radiation heats the surface of a workpiece, the surface heat diffuses inwards through heat conduction, and the workpiece is melted to form a specific molten pool by controlling parameters such as the width, energy, peak power and repetition frequency of laser pulses. Due to the unique advantages, the welding method is successfully applied to the precise welding of micro and small parts.
However, the laser welding machine on the market can only adjust the size of the light spot, but cannot change the shape of the light spot, so that the laser welding machine has certain limitation in application.
Disclosure of Invention
In view of the above, the present invention aims to provide a laser welding apparatus with an adjustable light source, which can adjust the shape and size of a light spot.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a laser welding device with an adjustable light source comprises a light source device, a base, a three-axis motion platform, a laser head and a tin wire supply device, wherein the control device is electrically connected with the three-axis motion platform and the tin wire supply device; the laser head and the tin wire supply device are arranged on the three-axis motion platform; the output end of the light source device is connected with the input end of the laser head through an optical fiber cable; the laser head comprises a shell, the upper end of the shell is provided with an optical fiber connecting port, the lower end of the shell is provided with a light outlet, and dustproof glass is arranged at the light outlet; a cavity is formed in the shell, and a first convex lens, a light spot shape adjusting device, a beam expander, a second convex lens and a third convex lens are sequentially arranged in the cavity from top to bottom at intervals; the sizes of the second convex lens and the third convex lens are the same;
the light spot adjusting device comprises a driving mechanism and an adjusting plate; the adjusting plate comprises an outer frame and 8 square light-transmitting plates arranged on the inner side of the outer frame, and each light-transmitting plate is provided with light-transmitting holes in different shapes; the light-transmitting plates are arranged in a 3-by-3 matrix, every two adjacent light-transmitting plates are connected in a sliding mode, and the light-transmitting plates are connected with the outer frame in a sliding mode; the driving mechanism is used for driving one or more of the light-transmitting plates to move so as to enable one of the light-transmitting plates to be displaced to the middle position of the matrix; the drive mechanism is in communication with a control device.
Preferably, the lower side and the right side of the light-transmitting plate are provided with first sliding strips, and the upper side and the left side are provided with first sliding grooves matched with the first sliding strips; the upper side inner wall and the left side inner wall of the outer frame are provided with second sliding strips matched with the first sliding grooves, and the lower side inner wall and the right side inner wall are provided with second sliding grooves matched with the first sliding strips.
Preferably, the light-transmitting plate comprises a plate body and light-transmitting glass embedded in the middle of the plate body, an installation cavity is arranged in the plate body, and the driving mechanism is installed in the installation cavity; the driving mechanism comprises a power module, a control panel and two groups of driving components, and the two groups of driving components are respectively close to the left side and the upper side of the plate body; the driving assembly comprises a gear and a driving motor, and the gear is coaxially connected with the output end of the driving motor; a first rack matched with the gear is arranged on the outer side of the first slide bar of the plate body; a second rack matched with the gear is arranged on the outer side of the second sliding strip;
the driving motor is electrically connected with the control panel, the control panel is provided with a first wireless communication module, the control device is provided with a second wireless communication module, and the control device sends a control instruction to the control panel in a wireless transmission mode.
Preferably, four side surfaces of the board body are provided with first conductive contacts which are electrically connected with the power supply module; and a second conductive contact matched with the first conductive contact is arranged on the inner side wall of the outer frame, the second conductive contact is electrically connected with an electrifying lead, and the electrifying lead is electrically connected with an external power supply.
Preferably, inductors are installed on four side surfaces of the plate body, the inductors are electrically connected with the control board, and the control board determines whether the plate body is moved in place according to feedback signals of the inductors corresponding to the moving direction of the plate body.
Preferably, the third convex lens is mounted on the movable frame, and a through groove penetrates through the outer side wall of the housing at a position corresponding to the movable frame; the outer side wall of the shell is provided with a screw rod sliding table, and the moving frame is connected with the table top of the screw rod sliding table through a connecting rod; the screw rod sliding table is electrically connected with the control device.
Preferably, the lower extreme of shell is installed the kuppe, the air inlet is installed to one side of kuppe, and the air inlet is connected with the admission line.
Preferably, the control method for the light spot adjusting device is further included, and the control method comprises the following steps:
s1, the control device acquires the position information of each light-transmitting plate through wireless communication, and selects the light-transmitting plate with the light-transmitting hole in the corresponding shape as a moving target according to the requirement of a user on the shape of the light spot;
s2, the control device generates a moving sequence table for part or all of the light transmission plates based on the position of the moving target in the matrix;
s3, the control device sends moving instructions to the corresponding light transmission plates in sequence based on the moving sequence table;
and S4, controlling the driving motor to work based on the received moving instruction to drive the light transmission plate to move one grid in the corresponding direction, and returning confirmation information to the control device after the light transmission plate is moved.
Preferably, the control method further includes:
before sending the moving instruction to the corresponding light transmission plate, the control device also sends a locking instruction to the light transmission plates on two sides of the moving direction of the corresponding light transmission plate;
and the light transmission plate receiving the locking instruction controls the electromagnet far away from the corresponding light transmission plate to be electrified.
The technical effects of the invention are mainly reflected in the following aspects:
1. switching the shapes of the light spots is realized by adopting a Sudoku structure;
2. the size of the light spot is adjusted by moving the position of the convex lens;
3. the adjusting process is simple and quick, and the switching can be automatically completed only by selecting the required light spot shape in the interactive interface.
Drawings
FIG. 1 is an overall schematic view of a laser welding apparatus in an embodiment;
FIG. 2 is a schematic diagram of a spot adjusting apparatus according to an embodiment;
FIG. 3 is a schematic diagram of an embodiment of a spot adjusting apparatus;
FIG. 4 is a schematic diagram of an embodiment of a spot adjusting apparatus;
FIG. 5 is a schematic view of a light-transmitting plate in an embodiment;
FIG. 6 is a view showing the internal structure of a light-transmitting plate in the embodiment.
Reference numerals: 1. a machine base; 2. a three-axis motion platform; 31. a housing; 32. an optical fiber connection port; 33. a power-on wire; 34. a pod; 35. an air inlet pipe; 36. a movable frame; 41. a first convex lens; 42. a beam expander; 43. a second convex lens; 44. a third convex lens; 45. dust-proof glass; 51. an outer frame; 511. a second slide bar; 512. a second chute; 513. a second rack; 52. a light-transmitting plate; 521. a plate body; 522. a light-transmitting glass; 523. a first slide bar; 524. a first rack; 525. a first chute; 6. a screw rod sliding table; 71. a control panel; 72. a first conductive contact; 73. an electromagnet; 74. a gear; 75. a drive motor; 76. an inductor; 8. a tin wire supply device.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.
Referring to fig. 1, the present embodiment provides a laser welding apparatus with an adjustable light source, which includes a light source device, a base 1, a three-axis motion platform 2, a laser head, and a tin wire supply device 8. The control device is electrically connected with the three-axis motion flat tin wire supply device 8; the laser head and the tin wire supply device 8 are arranged on the three-axis motion platform 2; the output end of the light source device is connected with the input end of the laser head through an optical fiber cable.
The laser head comprises a shell 31, the upper end of the shell 31 is provided with an optical fiber connecting port 32, the lower end of the shell 31 is provided with a light outlet, and dustproof glass 45 is arranged at the light outlet; a cavity is formed in the shell 31, and a first convex lens 41, a light spot shape adjusting device, a beam expander 42, a second convex lens 43 and a third convex lens 44 are sequentially arranged in the cavity from top to bottom at intervals; the second convex lens 43 and the third convex lens 44 are the same size.
The first convex lens 41 adjusts the laser light emitted from the optical fiber connection port 32 into a direct light beam in a certain range, the direct light beam becomes an intermediate light beam in a certain shape after passing through the light spot shape adjusting device, the intermediate light beam is expanded by the beam expander 42, the range is widened, and the widened light beam sequentially passes through the second convex lens 43 and the third convex lens 44 and is emitted from the lower end of the housing 31.
The first convex lens 41 should be as close to the optical fiber connection port 32 as possible, so that the first convex lens 41 with a smaller size can also meet the requirement, and the size of the spot shape adjusting device can also be made smaller.
The third convex lens 44 is mounted on the movable frame 36, and a through groove is penetratingly arranged on the outer side wall of the shell 31 corresponding to the position of the movable frame 36; the outer side wall of the shell 31 is provided with a screw rod sliding table 6, and the movable frame 36 is connected with the table surface of the screw rod sliding table 6 through a connecting rod; the screw rod sliding table 6 is electrically connected with the control device. In use, the control means may adjust the position of the third convex lens 44, and hence the size of the spot, by driving the screw slide 6.
The kuppe 34 is installed to the lower extreme of shell 31, and the air inlet is installed to one side of kuppe 34, and the air inlet is connected with intake pipe 35 way, and intake pipe 35 way and protective gas feeding device intercommunication, protective gas can be inert gas such as helium.
Referring to fig. 2 to 4, the light spot adjusting device includes a driving mechanism and an adjusting plate, the adjusting plate includes an outer frame 51 and 8 square transparent plates 52 disposed inside the outer frame 51, each transparent plate 52 has transparent holes with different shapes, and the laser has a specific shape after passing through the transparent holes; the light-transmitting panels 52 are arranged in a 3 x 3 matrix, thereby always leaving a vacant position.
The two adjacent transparent plates 52 are connected in a sliding manner, the transparent plates 52 are connected with the outer frame 51 in a sliding manner, specifically, the lower side and the right side of the transparent plates 52 are provided with first sliding strips 523, and the upper side and the left side are provided with first sliding grooves 525 matched with the first sliding strips 523; the upper inner wall and the left inner wall of the outer frame 51 are provided with second sliding strips 511 adapted to the first sliding grooves 525, and the lower inner wall and the right inner wall are provided with second sliding grooves 512 adapted to the first sliding strips 523.
Referring to fig. 4-6, the transparent plate 52 includes a plate 521 and a transparent glass 522 embedded in the middle of the plate 521, wherein an installation cavity is provided in the plate 521, and a driving mechanism is installed in the installation cavity; the driving mechanism comprises a power module, a control board 71 and two groups of driving components, wherein the two groups of driving components are respectively close to the left side and the upper side of the plate body 521; the driving assembly comprises a gear 74 and a driving motor 75, and the gear 74 is coaxially connected with the output end of the driving motor 75; a first rack 524 matched with the gear 74 is arranged on the outer side of the first slide bar 523 of the plate body 521; a second rack 513 fitted with the gear 74 is provided on the outer side of the second slider 511. Therefore, when the driving motor 75 rotates, the transparent plate 52 moves forward or backward.
The sensor 76 and the driving motor 75 are electrically connected to the control board 71, the control board 71 is configured with a first wireless communication module, the control device is configured with a second wireless communication module, and the control device sends a control command to the control board 71 in a wireless transmission manner. The control board 71 determines whether the plate 521 is moved in place according to a feedback signal of the sensor 76 corresponding to the moving direction of the plate 521.
In addition, in order to realize the energization of each component in the transparent plate 52, the four side surfaces of the plate body 521 are provided with first conductive contacts 72, and the first conductive contacts 72 are electrically connected with the power supply module; the inner side wall of the outer frame 51 is provided with a second conductive contact adapted to the first conductive contact 72, the second conductive contact is electrically connected to the power-on lead 33, and the power-on lead 33 is electrically connected to an external power supply.
Next, the present embodiment introduces a control method of the light spot adjusting apparatus, including:
s1, the control device acquires the position information of each light-transmitting plate 52 through wireless communication, and selects the light-transmitting plate 52 with the light-transmitting hole with the corresponding shape as a moving target according to the requirement of the user on the light spot shape;
s2, the control device generates a moving sequence table for part or all of the transparent plates 52 based on the position of the moving target in the matrix; each data in the moving sequence table comprises a moving object and a moving direction;
the principle of generating the moving sequence table can refer to a nine-grid puzzle algorithm, namely: and moving the moving target to the middle position of the matrix by adopting the minimum moving times.
S3, the control device sends moving instructions to the corresponding light transmission plates 52 in sequence based on the moving sequence table;
specifically, before sending the movement instruction to the corresponding transparent plate 52, the control device also sends a locking instruction to the transparent plates 52 on both sides of the corresponding transparent plate 52 in the movement direction;
the transparent plate 52 that receives the lock instruction controls the electromagnet 73 that is remote from the corresponding transparent plate 52 to be energized.
S4, the transparent plate 52 controls the driving motor 75 to operate based on the received moving command, so as to drive the transparent plate 52 to move one cell in the corresponding direction, and after the movement is completed, returns a confirmation message to the control device.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.
Claims (9)
1. A laser welding device with an adjustable light source comprises a light source device, a machine base (1), a three-axis motion platform (2), a laser head and a tin wire supply device (8), wherein the control device is electrically connected with the three-axis motion platform and the tin wire supply device (8); the laser head and the tin wire supply device (8) are arranged on the three-axis motion platform (2); the output end of the light source device is connected with the input end (32) of the laser head through an optical fiber cable; the laser head is characterized by comprising a shell (31), wherein the upper end of the shell (31) is provided with an optical fiber connecting port, the lower end of the shell is provided with a light outlet, and dustproof glass (45) is arranged at the light outlet; a cavity is formed in the shell (31), and a first convex lens (41), a light spot shape adjusting device, a beam expander (42), a second convex lens (43) and a third convex lens (44) are sequentially arranged in the cavity from top to bottom at intervals; the second convex lens (43) and the third convex lens (44) are the same in size;
the light spot adjusting device comprises a driving mechanism and an adjusting plate; the adjusting plate comprises an outer frame (51) and 8 square light transmission plates (52) arranged on the inner side of the outer frame (51), and each light transmission plate (52) is provided with light transmission holes in different shapes; the light-transmitting plates (52) are arranged in a 3-by-3 matrix, two adjacent light-transmitting plates (52) are connected in a sliding mode, and the light-transmitting plates (52) are connected with the outer frame (51) in a sliding mode; the driving mechanism is used for driving one or more of the transparent plates (52) to move so as to enable one of the transparent plates (52) to displace to the middle position of the matrix; the drive mechanism is in communication with a control device.
2. The laser welding equipment with the adjustable light source according to claim 1, wherein the lower side and the right side of the light-transmitting plate (52) are provided with first sliding strips (523), and the upper side and the left side are provided with first sliding grooves (525) matched with the first sliding strips (523); the inner wall of the upper side and the inner wall of the left side of the outer frame (51) are provided with second sliding strips (511) matched with the first sliding grooves (525), and the inner wall of the lower side and the inner wall of the right side are provided with second sliding grooves (512) matched with the first sliding strips (523).
3. The laser welding equipment with the adjustable light source according to claim 2, wherein the light-transmitting plate (52) comprises a plate body (521) and light-transmitting glass (522) embedded in the middle of the plate body (521), an installation cavity is arranged in the plate body (521), and the driving mechanism is installed in the installation cavity; the driving mechanism comprises a power supply module, a control panel (71) and two groups of driving components, wherein the two groups of driving components are respectively close to the left side and the upper side of the plate body (521); the driving assembly comprises a gear (74) and a driving motor (75), and the gear (74) is coaxially connected with the output end of the driving motor (75); a first rack (524) matched with the gear (74) is arranged on the outer side of the first slide bar (523) of the plate body (521); a second rack (513) matched with the gear (74) is arranged on the outer side of the second sliding strip (511);
the driving motor (75) is electrically connected with the control panel (71), the control panel (71) is provided with a first wireless communication module, the control device is provided with a second wireless communication module, and the control device sends a control instruction to the control panel (71) in a wireless transmission mode.
4. The laser welding equipment with the adjustable light source according to claim 3, characterized in that four sides of the plate body (521) are provided with first conductive contacts (72) which are electrically connected with a power supply module; and a second conductive contact matched with the first conductive contact (72) is arranged on the inner side wall of the outer frame (51), the second conductive contact is electrically connected with an electrifying lead (33), and the electrifying lead (33) is electrically connected with an external power supply.
5. The laser welding apparatus with the adjustable light source according to claim 4, wherein the sensors (76) are installed on four sides of the plate body (521), the sensors (76) are electrically connected with the control board (71), and the control board (71) determines whether the plate body (521) is moved in place according to a feedback signal of the sensors (76) corresponding to the moving direction of the plate body (521).
6. The laser welding device with the adjustable light source as claimed in claim 1, wherein the third convex lens (44) is mounted on a movable frame (36), and a through groove is penetratingly arranged on the outer side wall of the shell (31) corresponding to the position of the movable frame (36); the outer side wall of the shell (31) is provided with a screw rod sliding table (6), and the moving frame (36) is connected with the table surface of the screw rod sliding table (6) through a connecting rod; the screw rod sliding table (6) is electrically connected with the control device.
7. The laser welding equipment with the adjustable light source as claimed in claim 1, characterized in that a flow guide cover (34) is installed at the lower end of the shell (31), an air inlet is installed at one side of the flow guide cover (34), and an air inlet pipe (35) is connected to the air inlet.
8. The laser welding apparatus with adjustable light source as claimed in claim 5, further comprising a control method for the light spot adjusting device, the control method comprising:
s1, the control device acquires the position information of each transparent plate (52) through wireless communication, and selects the transparent plate (52) with the transparent hole with the corresponding shape as a moving target according to the requirement of the user on the shape of the light spot;
s2, the control device generates a moving sequence table for part or all of the transparent plates (52) based on the position of the moving target in the matrix;
s3, the control device sends moving instructions to the corresponding light transmission plates (52) in sequence based on the moving sequence table;
and S4, controlling the driving motor (75) to work based on the received moving instruction so as to drive the transparent plate (52) to move one cell in the corresponding direction, and returning confirmation information to the control device after the movement is completed.
9. The laser welding apparatus with adjustable light source according to claim 8, wherein the control method further comprises:
before sending the movement command to the corresponding transparent plate (52), the control device also sends a locking command to the transparent plates (52) on both sides of the corresponding transparent plate (52) in the movement direction;
the transparent plate (52) receiving the locking instruction controls the electromagnet (73) far away from the corresponding transparent plate (52) to be electrified.
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| CN202111455939.3A CN114101905B (en) | 2021-12-01 | 2021-12-01 | Laser welding equipment with adjustable light source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115213811A (en) * | 2022-07-20 | 2022-10-21 | 华侨大学 | Carrier for photo-assisted chemical mechanical polishing and polishing processing method |
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| CN111299850A (en) * | 2019-10-31 | 2020-06-19 | 佛山市宏石激光技术有限公司 | Laser processing method |
| CN112475626A (en) * | 2020-11-10 | 2021-03-12 | 广州澳沃司照明电器有限公司 | Laser cutting mechanism for intelligent manufacturing |
| CN214097868U (en) * | 2020-12-31 | 2021-08-31 | 武汉锐科光纤激光技术股份有限公司 | Optical isolator and laser equipment |
| CN112846488A (en) * | 2021-03-09 | 2021-05-28 | 上海维宏电子科技股份有限公司 | Variable facula laser cutting head device |
| CN214896037U (en) * | 2021-04-25 | 2021-11-26 | 天津市极光创新智能科技有限公司 | Light beam control device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115213811A (en) * | 2022-07-20 | 2022-10-21 | 华侨大学 | Carrier for photo-assisted chemical mechanical polishing and polishing processing method |
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